[PasswordManager] Fix Flaky BrowserTest related to dynamically created

chrome/browser/password_manager/password_manager_test_base.cc

Index: chrome/browser/password_manager/password_manager_test_base.cc
diff --git a/chrome/browser/password_manager/password_manager_test_base.cc b/chrome/browser/password_manager/password_manager_test_base.cc
index 891dac0cd791ac2f4d6d4faecb2ba410199f85c9..8430b7e5d9a6c87d59f5b8a5d82de354065c2e91 100644
--- a/chrome/browser/password_manager/password_manager_test_base.cc
+++ b/chrome/browser/password_manager/password_manager_test_base.cc
@@ -56,8 +56,30 @@ void NavigationObserver::Wait() {
   message_loop_runner_->Run();
 }
 
+PasswordStoreObserver::PasswordStoreObserver(
+    password_manager::TestPasswordStore* password_store)
+    : message_loop_runner_(new content::MessageLoopRunner),
+      test_password_store_(password_store) {
+}
+
+PasswordStoreObserver::~PasswordStoreObserver() {
+}
+
+void PasswordStoreObserver::Wait() {
+  autofill::PasswordForm form;
+  test_password_store_->GetLogins(
+      form, password_manager::PasswordStore::ALLOW_PROMPT, this);

[vabr (Chromium), 2015/08/05 08:37:35]

Please use DISALLOW_PROMPT instead, to mitigate the risk of getting stuck
because of displaying a user-facing prompt to unlock the keychain.

[xunlu, 2015/08/05 18:37:13]

Done.

+  message_loop_runner_->Run();
+}
+
+void PasswordStoreObserver::OnGetPasswordStoreResults(
+    ScopedVector<autofill::PasswordForm> results) {
+  message_loop_runner_->Quit();
+}
+
 PromptObserver::PromptObserver() {
 }
+
 PromptObserver::~PromptObserver() {
 }